I'm not sure how legit this site is but interesting nonetheless.
http://www.ticgn.com/microsoft-files-a-new-game-trademark-possible-new-ip/
http://www.ticgn.com/microsoft-files-a-new-game-trademark-possible-new-ip/
It appears that Microsoft has filed for a new trademark last week, it is filed under Class 9 which is for game software.
The original link to the trademark has been taken down, so it appears that Microsoft found out people knew of it and are trying to hide it. Something similar happened a couple years ago when Microsoft trademarked a new Killer Instinct game, which eventually was proven to be a real thing.
The trademark is named “Fragments”, which doesn’t really sound like anything we’ve heard coming from Microsoft so perhaps it is a new IP?
Phil Spencer has created a big focus on creating new exclusive IPs for the Xbox One ever since he became the head of Xbox; so it is likely that we’re looking at yet another new franchise for Xbox. But only time will tell what this trademark exactly is.